Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Pierre A. Doriot"'
Autor:
Pierre-André Doriot
Publikováno v:
Journal of Theoretical Biology. 221:133-141
The "zero-stress state" of blood vessels is usually defined with respect to the atmospheric pressure p(a) ( approximately 750 mmHg). As a consequence, circumferential and axial wall stresses due to a positive transmural pressure can only be positive
Autor:
Raymond Miralbell, Pierre-André Doriot, Philippe Maillet, Nigel E.A. Crompton, Philippe Nouet, Monika Harms, Vitali Verin, Michel Rouzaud
Publikováno v:
Journal of Vascular and Interventional Radiology. 10:1190-1194
Publikováno v:
The International Journal of Cardiac Imaging. 12:289-297
Under ideal conditions, densitometric measurement of a coronary arterial cross section in biplane angiographic images should result in nearly equal cross sectional areas for both planes. However, quite appreciable discrepancies have been found by som
Autor:
Pierre André Doriot, Antonius F.W. van der Steen, Harald C. Groen, Frank J. H. Gijsen, Alina G. van der Giessen, Jolanda J. Wentzel, Frans N. van de Vosse, Pim J. de Feyter
Publikováno v:
Journal of Biomechanics, 44(6), 1089-1095. Elsevier Ltd.
Journal of Biomechanics, 44(6), 1089-1095. Elsevier
Journal of Biomechanics, 44(6), 1089-1095. Elsevier
Patient specific geometrical data on human coronary arteries can be reliably obtained multislice computer tomography (MSCT) imaging. MSCT cannot provide hemodynamic variables, and the outflow through the side branches must be estimated. The impact of
Autor:
Wilhelm Rutishauser, Caroline Suilen, Nicolas Guggenheim, Pierre A. Dorsaz, François Chappuis, Pierre A. Doriot
Publikováno v:
The International Journal of Cardiac Imaging. 8:121-130
Geometric and densitometric methods for quantitative coronary arteriography have generally been compared by use of phantoms simulating arteries with circular lumina ('Hole phantoms'). We have used more adequate phantoms obtained by casting disease-fr
Publikováno v:
International journal of cardiac imaging. 11(1)
In some angiographic methods for measurement of mean coronary flow in ml/min, a threshold is applied to ‘concentration-distance’ curves obtained from a constant rate injection by computing the intravascular contrast medium concentration along the
Autor:
Jürgen Haase, Cornelis J. Slager, David Keane, David P. Foley, Ad Den Boer, Pierre A. Doriot, Patrick W. Serruys
Publikováno v:
Catheterization and cardiovascular diagnosis. 33(1)
Changes in intracoronary volume reflect the hemodynamic significance of progression or regression of diffuse coronary artery disease where intracoronary catheters cannot be applied for direct measurements due to small vessel dimensions. We have valid
Autor:
Pierre A. Doriot, Pierre A. Dorsaz, Caroline Suilen, Wilhelm Rutishauser, Nicolas Guggenheim, Fançois Chappuis, P. Descouts
Publikováno v:
International journal of cardiac imaging. 8(4)
An angiographic method for measurement of absolute coronary blood flow in patients was developed. It is based on 3D-reconstruction of the left or right coronary tree from digitized biplane coronary cineangiograms. The apparatus is presently composed
Autor:
Leo Finci, Wilhelm Rutishauser, Pierre A. Doriot, Bernard De Bruyne, Pierre A. Dorsaz, Bernhard Meier
Publikováno v:
The International Journal of Cardiac Imaging. 3:47-55
Digital angiography provides a convenient means to quantify the progression of a contrast medium bolus injected into a coronary artery throughout the myocardium, which in turn yields information on myocardial perfusion. Sixteen patients presenting a
Autor:
Leo Finci, Pierre Chatelain, Jean-Paul Melchior, Bernhard Meier, Wilhelm Rutishauser, Pierre A. Doriot, Philip Urban
Publikováno v:
Journal of the American College of Cardiology. 9(4)
Twenty patients with a chronic total coronary artery occlusion were studied before and 1 to 48 months (mean 9) after successful recanalization by angioplasty and compared with a group of 20 normal subjects. Before angioplasty, 19 of these 20 patients